spiegel-keyman/common/web/keyboard-processor/tests/node/specialized-backspace.js

349 lines
No EOL
12 KiB
JavaScript

import { assert } from 'chai';
import fs from 'fs';
import { createRequire } from 'module';
const require = createRequire(import.meta.url);
import { Codes, KeyboardInterface, KeyboardProcessor, KeyEvent, MinimalKeymanGlobal, Mock } from '@keymanapp/keyboard-processor';
import { NodeKeyboardLoader } from '@keymanapp/keyboard-processor/node-keyboard-loader';
const TEST_DEVICE = {
formFactor: 'desktop',
OS: 'windows',
browser: 'native',
touchable: false
}
// Basic scaffolding necessary to use special, locally-defined test keyboards.
const COMMON_KBD_SCRIPT_PROPS = new (function (){
var modCodes = Codes.modifierCodes;
this.KMINVER="10.0";
// this.KV left empty - we aren't doing layout stuff for this test, so it's "fine".
// - also this.KV.KLS
// - also this.KV.BK
this.KH='';
this.KM=0;
this.KBVER="0.0.1";
this.KMBM=modCodes.SHIFT /* 0x0010 */;
this.gs=function(t,e) {
return this.g_main(t,e);
};
})();
const DUMMIED_KEYS_KEYBOARD_SCRIPT = function keyboard_core () {
Object.assign(this, COMMON_KBD_SCRIPT_PROPS);
this.KI="Keyboard_dummied_keys";
this.KN="Dummied Keys";
this.g_main=function(t,e) {
// All keys match but do nothing.
return 1;
}
}
const DOUBLED_BKSP_KEYBOARD_SCRIPT = function keyboard_core () {
Object.assign(this, COMMON_KBD_SCRIPT_PROPS);
this.KI="Keyboard_doubled_backspace";
this.KN="Doubled Backspace";
this.g_main=function(t,e) {
var k=KeymanWeb;
// Standard compiled keyboards do not directly use any methods on `t`.
if(e.Lcode == Codes.keyCodes.K_BKSP && t.getTextBeforeCaret().kmwLength() >= 2){
// If the context has at least two characters, delete two.
k.KO(2, t, '')
// Our rule matched, so signal that.
return 1;
} else {
// All other keystrokes should result in default behavior.
return 0;
}
}
}
describe('Engine - specialized backspace handling', function() {
const ipaPath = require.resolve('@keymanapp/common-test-resources/keyboards/sil_ipa.js');
const angkorPath = require.resolve('@keymanapp/common-test-resources/keyboards/khmer_angkor.js');
let device = {
formFactor: 'desktop',
OS: 'windows',
browser: 'native'
}
let ipaWithHarness;
let angkorWithHarness;
let dummiedWithHarness;
let bksp2xWithHarness;
before(async () => {
// -- START: Standard keyboard unit test loading boilerplate --
let harness = new KeyboardInterface({}, MinimalKeymanGlobal);
let keyboardLoader = new NodeKeyboardLoader(harness);
let keyboard = await keyboardLoader.loadKeyboardFromPath(ipaPath);
// -- END: Standard keyboard unit test loading boilerplate --
// This part provides extra assurance that the keyboard properly loaded.
assert.equal(keyboard.id, "Keyboard_sil_ipa");
harness.activeKeyboard = keyboard;
ipaWithHarness = harness;
// --------------
// -- START: Standard keyboard unit test loading boilerplate --
harness = new KeyboardInterface({}, MinimalKeymanGlobal);
keyboardLoader = new NodeKeyboardLoader(harness);
keyboard = await keyboardLoader.loadKeyboardFromPath(angkorPath);
// -- END: Standard keyboard unit test loading boilerplate --
// This part provides extra assurance that the keyboard properly loaded.
assert.equal(keyboard.id, "Keyboard_khmer_angkor");
harness.activeKeyboard = keyboard;
angkorWithHarness = harness;
// --------------
harness = new KeyboardInterface(globalThis, MinimalKeymanGlobal);
harness.install();
// Sets the keyboard as the harness's "loaded" keyboard, but not "active".
harness.KR(new DUMMIED_KEYS_KEYBOARD_SCRIPT());
harness.activeKeyboard = harness.loadedKeyboard;
assert.isOk(harness.activeKeyboard);
dummiedWithHarness = harness;
// --------------
harness = new KeyboardInterface(globalThis, MinimalKeymanGlobal);
harness.install();
// Sets the keyboard as the harness's "loaded" keyboard, but not "active".
harness.KR(new DOUBLED_BKSP_KEYBOARD_SCRIPT());
harness.activeKeyboard = harness.loadedKeyboard;
assert.isOk(harness.activeKeyboard);
bksp2xWithHarness = harness;
});
it('empty context, positional keyboard', () => {
let contextSource = new Mock('');
let event = new KeyEvent({
Lcode: Codes.keyCodes.K_BKSP,
Lmodifiers: 0,
Lstates: Codes.modifierCodes.NO_CAPS | Codes.modifierCodes.NO_NUM_LOCK | Codes.modifierCodes.NO_SCROLL_LOCK,
LisVirtualKey: true,
kName: '',
vkCode: Codes.keyCodes.K_BKSP,
device: device
});
const processor = new KeyboardProcessor(TEST_DEVICE, {
keyboardInterface: angkorWithHarness
});
const result = processor.processKeystroke(event, contextSource);
assert.isTrue(result.triggerKeyDefault);
assert.equal(contextSource.getTextBeforeCaret(), '');
assert.equal(contextSource.getTextAfterCaret(), '');
assert.isOk(result?.transcription?.transform);
const transform = result.transcription.transform;
assert.equal(transform.insert, '');
assert.equal(transform.deleteLeft, 1);
assert.isNotOk(transform.deleteRight);
});
it("empty context, positional keyboard, outputless-key that's not BKSP", () => {
let contextSource = new Mock('');
let event = new KeyEvent({
Lcode: Codes.keyCodes.K_A,
Lmodifiers: 0,
Lstates: Codes.modifierCodes.NO_CAPS | Codes.modifierCodes.NO_NUM_LOCK | Codes.modifierCodes.NO_SCROLL_LOCK,
LisVirtualKey: true,
kName: '',
vkCode: Codes.keyCodes.K_A,
device: device
});
// A specialized test keyboard that handles keys without emitting any content.
// We want to ensure error cases without output, on null context, don't act
// like backspaces.
const processor = new KeyboardProcessor(TEST_DEVICE, {
keyboardInterface: dummiedWithHarness
});
const result = processor.processKeystroke(event, contextSource);
// Did match a keyboard rule.
assert.isFalse(result.triggerKeyDefault);
assert.equal(contextSource.getTextBeforeCaret(), '');
assert.equal(contextSource.getTextAfterCaret(), '');
assert.isOk(result?.transcription?.transform);
const transform = result.transcription.transform;
assert.equal(transform.insert, '');
// Does not trigger backspace-like behavior.
assert.equal(transform.deleteLeft, 0);
assert.isNotOk(transform.deleteRight);
});
it('empty context, positional keyboard, but text is selected', () => {
let contextSource = new Mock('selected text', 0);
contextSource.setSelection(0, contextSource.getText().kmwLength());
let event = new KeyEvent({
Lcode: Codes.keyCodes.K_BKSP,
Lmodifiers: 0,
Lstates: Codes.modifierCodes.NO_CAPS | Codes.modifierCodes.NO_NUM_LOCK | Codes.modifierCodes.NO_SCROLL_LOCK,
LisVirtualKey: true,
kName: '',
vkCode: Codes.keyCodes.K_BKSP,
device: device
});
const processor = new KeyboardProcessor(TEST_DEVICE, {
keyboardInterface: angkorWithHarness
});
const result = processor.processKeystroke(event, contextSource);
assert.isFalse(result.triggerKeyDefault);
assert.equal(contextSource.getTextBeforeCaret(), '');
assert.equal(contextSource.getTextAfterCaret(), '');
assert.isOk(result?.transcription?.transform);
const transform = result.transcription.transform;
assert.equal(transform.insert, '');
// This BKSP was to delete selected text, NOT to delete text before the caret.
assert.equal(transform.deleteLeft, 0);
// Is currently not what I'd expect - it reports the length of the selected string instead!
// Fixing that may have knock-on effects, though... and it seems to pass through
// the apps just fine as-is.
//
// I do have concerns for certain scripts on iOS, though... see #4538.
// assert.isNotOk(transform.deleteRight);
});
it('empty left-context, positional keyboard', () => {
let contextSource = new Mock('post-caret text', 0);
let event = new KeyEvent({
Lcode: Codes.keyCodes.K_BKSP,
Lmodifiers: 0,
Lstates: Codes.modifierCodes.NO_CAPS | Codes.modifierCodes.NO_NUM_LOCK | Codes.modifierCodes.NO_SCROLL_LOCK,
LisVirtualKey: true,
kName: '',
vkCode: Codes.keyCodes.K_BKSP,
device: device
});
const processor = new KeyboardProcessor(TEST_DEVICE, {
keyboardInterface: angkorWithHarness
});
const result = processor.processKeystroke(event, contextSource);
assert.isTrue(result.triggerKeyDefault);
assert.equal(contextSource.getTextBeforeCaret(), '');
assert.equal(contextSource.getTextAfterCaret(), 'post-caret text');
assert.isOk(result?.transcription?.transform);
const transform = result.transcription.transform;
assert.equal(transform.insert, '');
assert.equal(transform.deleteLeft, 1);
assert.isNotOk(transform.deleteRight);
});
it('empty context, mnemonic keyboard', () => {
let contextSource = new Mock('');
let event = new KeyEvent({
Lcode: Codes.keyCodes.K_BKSP,
Lmodifiers: 0,
Lstates: Codes.modifierCodes.NO_CAPS | Codes.modifierCodes.NO_NUM_LOCK | Codes.modifierCodes.NO_SCROLL_LOCK,
LisVirtualKey: true,
kName: '',
vkCode: Codes.keyCodes.K_BKSP,
device: device
});
const processor = new KeyboardProcessor(TEST_DEVICE, {
keyboardInterface: ipaWithHarness
});
const result = processor.processKeystroke(event, contextSource);
assert.isTrue(result.triggerKeyDefault);
assert.equal(contextSource.getTextBeforeCaret(), '');
assert.equal(contextSource.getTextAfterCaret(), '');
assert.isOk(result?.transcription?.transform);
const transform = result.transcription.transform;
assert.equal(transform.insert, '');
assert.equal(transform.deleteLeft, 1);
assert.isNotOk(transform.deleteRight);
});
it('final empty context, positional keyboard, rule-handled BKSP', () => {
let contextSource = new Mock('abc', 2);
let event = new KeyEvent({
Lcode: Codes.keyCodes.K_BKSP,
Lmodifiers: 0,
Lstates: Codes.modifierCodes.NO_CAPS | Codes.modifierCodes.NO_NUM_LOCK | Codes.modifierCodes.NO_SCROLL_LOCK,
LisVirtualKey: true,
kName: '',
vkCode: Codes.keyCodes.K_BKSP,
device: device
});
// A specialized test keyboard that duplicates backspaces when sufficient
// context exists.
const processor = new KeyboardProcessor(TEST_DEVICE, {
keyboardInterface: bksp2xWithHarness
});
const result = processor.processKeystroke(event, contextSource);
// Did match a keyboard rule.
assert.isFalse(result.triggerKeyDefault);
assert.equal(contextSource.getTextBeforeCaret(), '');
assert.equal(contextSource.getTextAfterCaret(), 'c');
assert.isOk(result?.transcription?.transform);
const transform = result.transcription.transform;
assert.equal(transform.insert, '');
// Triggered keyboard's backspace behavior, not special started-as-null behavior.
// (Ensure that _ending_ with empty context doesn't overwrite a rule that gets us there.)
assert.equal(transform.deleteLeft, 2);
assert.isNotOk(transform.deleteRight);
});
// Special case: BKSP rule-matches with empty left-context.
it("empty context, positional keyboard, outputless BKSP rule", () => {
let contextSource = new Mock('');
let event = new KeyEvent({
Lcode: Codes.keyCodes.K_BKSP,
Lmodifiers: 0,
Lstates: Codes.modifierCodes.NO_CAPS | Codes.modifierCodes.NO_NUM_LOCK | Codes.modifierCodes.NO_SCROLL_LOCK,
LisVirtualKey: true,
kName: '',
vkCode: Codes.keyCodes.K_BKSP,
device: device
});
// A specialized test keyboard that handles keys without emitting any content.
// We want to ensure error cases without output, on null context, don't act
// like backspaces.
const processor = new KeyboardProcessor(TEST_DEVICE, {
keyboardInterface: dummiedWithHarness
});
const result = processor.processKeystroke(event, contextSource);
assert.isFalse(result.triggerKeyDefault);
assert.equal(contextSource.getTextBeforeCaret(), '');
assert.equal(contextSource.getTextAfterCaret(), '');
assert.isOk(result?.transcription?.transform);
const transform = result.transcription.transform;
assert.equal(transform.insert, '');
// Does not trigger backspace-like behavior because of the keyboard's rule.
assert.equal(transform.deleteLeft, 0);
assert.isNotOk(transform.deleteRight);
});
});